Brazilian Journal of Pulmonology

ISSN (on-line): 1806-3756 | ISSN (printed): 1806-3713

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Year 2016 - Volume 42  - Number 6  (November/December)

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Continuing Education: Imaging

3 - Clusters of small nodules with no confluence

Aglomerados de pequenos nódulos sem confluência

Edson Marchiori1,2, Bruno Hochhegger3,4, Gláucia Zanetti2,5

J Bras Pneumol.2016;42(6):402

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Continuing Education : Scientific Methodology

Original Article

5 - Effects of positive expiratory pressure on pulmonary clearance of aerosolized technetium-99m-labeled diethylenetriaminepentaacetic acid in healthy individuals

Efeitos da pressão expiratória positiva na depuração pulmonar do ácido dietilenotriaminopentacético marcado com tecnécio-99m em aerossol em indivíduos saudáveis

Isabella Martins de Albuquerque1, Dannuey Machado Cardoso2, Paulo Ricardo Masiero3, Dulciane Nunes Paiva4, Vanessa Regiane Resqueti5, Guilherme Augusto de Freitas Fregonezi5, Sérgio Saldanha Menna-Barreto6

J Bras Pneumol.2016;42(6):404-408

Abstract PDF PT PDF EN Portuguese Text

Objective: To evaluate the effects of positive expiratory pressure (PEP) on pulmonary epithelial membrane permeability in healthy subjects. Methods: We evaluated a cohort of 30 healthy subjects (15 males and 15 females) with a mean age of 28.3 ± 5.4 years, a mean FEV1/FVC ratio of 0.89 ± 0.14, and a mean FEV1 of 98.5 ± 13.1% of predicted. Subjects underwent technetium-99m-labeled diethylenetriaminepentaacetic acid (99mTc-DTPA) radioaerosol inhalation lung scintigraphy in two stages: during spontaneous breathing; and while breathing through a PEP mask at one of three PEP levels-10 cmH2O (n = 10), 15 cmH2O (n = 10), and 20 cmH2O (n = 10). The 99mTc-DTPA was nebulized for 3 min, and its clearance was recorded by scintigraphy over a 30-min period during spontaneous breathing and over a 30-min period during breathing through a PEP mask. Results: The pulmonary clearance of 99mTc-DTPA was significantly shorter when PEP was applied-at 10 cmH2O (p = 0.044), 15 cmH2O (p = 0.044), and 20 cmH2O (p = 0.004)-in comparison with that observed during spontaneous breathing. Conclusions: Our findings indicate that PEP, at the levels tested, is able to induce an increase in pulmonary epithelial membrane permeability and lung volume in healthy subjects.

 


Keywords: Lung/metabolism; Technetium Tc 99m pentetate/pharmacokinetics; Radiopharmaceuticals; Positive-pressure respiration.

 

6 - Pulmonary function in children and adolescents with sickle cell disease: have we paid proper attention to this problem?

Função pulmonar em crianças e adolescentes com doença falciforme: temos dado atenção adequada a esse problema?

Ana Karine Vieira1, Cristina Gonçalves Alvim2, Maria Cristina Marquez Carneiro3, Cássio da Cunha Ibiapina4

J Bras Pneumol.2016;42(6):409-415

Abstract PDF PT PDF EN Portuguese Text

Objective: To evaluate pulmonary function and functional capacity in children and adolescents with sickle cell disease. Methods: This was a cross-sectional study involving 70 children and adolescents (8-15 years of age) with sickle cell disease who underwent pulmonary function tests (spirometry) and functional capacity testing (six-minute walk test). The results of the pulmonary function tests were compared with variables related to the severity of sickle cell disease and history of asthma and of acute chest syndrome. Results: Of the 64 patients who underwent spirometry, 15 (23.4%) showed abnormal results: restrictive lung disease, in 8 (12.5%); and obstructive lung disease, in 7 (10.9%). Of the 69 patients who underwent the six-minute walk test, 18 (26.1%) showed abnormal results regarding the six-minute walk distance as a percentage of the predicted value for age, and there was a ≥ 3% decrease in SpO2 in 36 patients (52.2%). Abnormal pulmonary function was not significantly associated with any of the other variables studied, except for hypoxemia and restrictive lung disease. Conclusions: In this sample of children and adolescents with sickle cell disease, there was a significant prevalence of abnormal pulmonary function. The high prevalence of respiratory disorders suggests the need for a closer look at the lung function of this population, in childhood and thereafter.

 


Keywords: Anemia, sickle cell; Respiratory function tests; Exercise test.

 

7 - Temporal analysis of reported cases of tuberculosis and of tuberculosis-HIV co-infection in Brazil between 2002 and 2012*

Análise temporal dos casos notificados de tuberculose e de coinfecção tuberculose- -HIV na população brasileira no período entre 2002 e 2012

Renato Simões Gaspar1, Natália Nunes1, Marina Nunes2, Vandilson Pinheiro Rodrigues3

J Bras Pneumol.2016;42(6):416-422

Abstract PDF PT PDF EN Portuguese Text

Objective: To investigate the reported cases of tuberculosis and of tuberculosis-HIV co-infection in Brazil between 2002 and 2012. Methods: This was an observational study based on secondary time series data collected from the Brazilian Case Registry Database for the 2002-2012 period. The incidence of tuberculosis was stratified by gender, age group, geographical region, and outcome, as was that of tuberculosis-HIV co-infection. Results: Nationally, the incidence of tuberculosis declined by 18%, whereas that of tuberculosis-HIV co-infection increased by 3.8%. There was an overall decrease in the incidence of tuberculosis, despite a significant increase in that of tuberculosis-HIV co-infection in women. The incidence of tuberculosis decreased only in the 0- to 9-year age bracket, remaining stable or increasing in the other age groups. The incidence of tuberculosis-HIV co-infection increased by 209% in the ≥ 60-year age bracket. The incidence of tuberculosis decreased in all geographical regions except the south, whereas that of tuberculosis-HIV co-infection increased by over 150% in the north and northeast. Regarding the outcomes, patients with tuberculosis-HIV co-infection, in comparison with patients infected with tuberculosis only, had a 48% lower chance of cure, a 50% greater risk of treatment nonadherence, and a 94% greater risk of death from tuberculosis. Conclusions: Our study shows that tuberculosis continues to be a relevant public health issue in Brazil, because the goals for the control and cure of the disease have yet to be achieved. In addition, the sharp increase in the incidence of tuberculosis-HIV co-infection in women, in the elderly, and in the northern/northeastern region reveals that the population of HIV-infected individuals is rapidly becoming more female, older, and more impoverished.

 


Keywords: Tuberculosis/epidemiology; HIV infections/epidemiology; Comorbidity.

 

8 - Association between severe asthma and changes in the stomatognathic system

Associação entre asma grave e alterações do sistema estomatognático

Mayra Carvalho-Oliveira1,2, Cristina Salles3, Regina Terse4, Argemiro D'Oliveira Júnior2,5

J Bras Pneumol.2016;42(6):423-428

Abstract PDF PT PDF EN Portuguese Text

Objective: To describe orofacial muscle function in patients with severe asthma. Methods: This was a descriptive study comparing patients with severe controlled asthma (SCA) and severe uncontrolled asthma (SUA). We selected 160 patients, who completed a sociodemographic questionnaire and the 6-item Asthma Control Questionnaire (ACQ-6), as well as undergoing evaluation of orofacial muscle function. Results: Of the 160 patients evaluated, 126 (78.8%) and 34 (21.2%) presented with SCA and SUA, respectively, as defined by the Global Initiative for Asthma criteria. Regardless of the level of asthma control, the most frequent changes found after evaluation of muscle function were difficulty in chewing, oronasal breathing pattern, below-average or poor dental arch condition, and difficulty in swallowing. When the sample was stratified by FEV1 (% of predicted), was significantly higher proportions of SUA group patients, compared with SCA group patients, showed habitual open-mouth chewing (24.8% vs. 7.7%; p < 0.02), difficulty in swallowing water (33.7% vs. 17.3%; p < 0.04), and voice problems (81.2% vs. 51.9%; p < 0.01). When the sample was stratified by ACQ-6 score, the proportion of patients showing difficulty in swallowing bread was significantly higher in the SUA group than in the SCA group (66.6% vs. 26.6%; p < 0.01). Conclusions: The prevalence of changes in the stomatognathic system appears to be high among adults with severe asthma, regardless of the level of asthma control. We found that some such changes were significantly more common in patients with SUA than in those with SCA.

 


Keywords: Speech/physiology; Stomatognathic system/physiopathology; Asthma/complications; Deglutition disorders; Mastication/physiology.

 

9 - Perme Intensive Care Unit Mobility Score and ICU Mobility Scale: translation into Portuguese and cross-cultural adaptation for use in Brazil

Perme Intensive Care Unit Mobility Score e ICU Mobility Scale: tradução e adaptação cultural para a língua portuguesa falada no Brasil

Yurika Maria Fogaça Kawaguchi1, Ricardo Kenji Nawa2,3, Thais Borgheti Figueiredo4, Lourdes Martins5, Ruy Camargo Pires-Neto1,6

J Bras Pneumol.2016;42(6):429-431

Abstract PDF PT PDF EN Portuguese Text Appendix

Objective: To translate the Perme Intensive Care Unit Mobility Score and the ICU Mobility Scale (IMS) into Portuguese, creating versions that are cross-culturally adapted for use in Brazil, and to determine the interobserver agreement and reliability for both versions. Methods: The processes of translation and cross-cultural validation consisted in the following: preparation, translation, reconciliation, synthesis, back-translation, review, approval, and pre-test. The Portuguese-language versions of both instruments were then used by two researchers to evaluate critically ill ICU patients. Weighted kappa statistics and Bland-Altman plots were used in order to verify interobserver agreement for the two instruments. In each of the domains of the instruments, interobserver reliability was evaluated with Cronbach's alpha coefficient. The correlation between the instruments was assessed by Spearman's correlation test. Results: The study sample comprised 103 patients-56 (54%) of whom were male-with a mean age of 52 ± 18 years. The main reason for ICU admission (in 44%) was respiratory failure. Both instruments showed excellent interobserver agreement (κ > 0.90) and reliability (α > 0.90) in all domains. Interobserver bias was low for the IMS and the Perme Score (−0.048 ± 0.350 and −0.06 ± 0.73, respectively). The 95% CIs for the same instruments ranged from −0.73 to 0.64 and −1.50 to 1.36, respectively. There was also a strong positive correlation between the two instruments (r = 0.941; p < 0.001). Conclusions: In their versions adapted for use in Brazil, both instruments showed high interobserver agreement and reliability.

 


Keywords: Physical therapy modalities; Intensive care units; Translations; Validation studies.

 

10 - The halo sign: HRCT findings in 85 patients

Sinal do halo: achados de TCAR em 85 pacientes

Giordano Rafael Tronco Alves1, Edson Marchiori1, Klaus Irion2, Carlos Schuler Nin3, Guilherme Watte3, Alessandro Comarú Pasqualotto3, Luiz Carlos Severo3, Bruno Hochhegger1,3

J Bras Pneumol.2016;42(6):435-439

Abstract PDF PT PDF EN Portuguese Text

Objective: The halo sign consists of an area of ground-glass opacity surrounding pulmonary lesions on chest CT scans. We compared immunocompetent and immunosuppressed patients in terms of halo sign features and sought to identify those of greatest diagnostic value. Methods: This was a retrospective study of CT scans performed at any of seven centers between January of 2011 and May of 2015. Patients were classified according to their immune status. Two thoracic radiologists reviewed the scans in order to determine the number of lesions, as well as their distribution, size, and contour, together with halo thickness and any other associated findings. Results: Of the 85 patients evaluated, 53 were immunocompetent and 32 were immunosuppressed. Of the 53 immunocompetent patients, 34 (64%) were diagnosed with primary neoplasm. Of the 32 immunosuppressed patients, 25 (78%) were diagnosed with aspergillosis. Multiple and randomly distributed lesions were more common in the immunosuppressed patients than in the immunocompetent patients (p < 0.001 for both). Halo thickness was found to be greater in the immunosuppressed patients (p < 0.05). Conclusions: Etiologies of the halo sign differ markedly between immunocompetent and immunosuppressed patients. Although thicker halos are more likely to occur in patients with infectious diseases, the number and distribution of lesions should also be taken into account when evaluating patients presenting with the halo sign.

 


Keywords: Tomography, X-ray computed; Aspergillosis; Lung neoplasms.

 

Brief Communication

11 - Educational interventions to improve inhaler techniques and their impact on asthma and COPD control: a pilot effectiveness-implementation trial

Educação para a melhora da técnica inalatória e seu impacto no controle da asma e DPOC: um estudo piloto de efetividade-intervenção

Tiago Maricoto1, Sofia Madanelo2, Luís Rodrigues3, Gilberto Teixeira3, Carla Valente3, Lília Andrade3, Alcina Saraiva3

J Bras Pneumol.2016;42(6):440-443

Abstract PDF PT PDF EN Portuguese Text

To assess the impact that educational interventions to improve inhaler techniques have on the clinical and functional control of asthma and COPD, we evaluated 44 participants before and after such an intervention. There was a significant decrease in the number of errors, and 20 patients (46%) significantly improved their technique regarding prior exhalation and breath hold. In the asthma group, there were significant improvements in the mean FEV1, FVC, and PEF (of 6.4%, 8.6%, and 8.3% respectively). Those improvements were accompanied by improvements in Control of Allergic Rhinitis and Asthma Test scores but not in Asthma Control Test scores. In the COPD group, there were no significant variations. In asthma patients, educational interventions appear to improve inhaler technique, clinical control, and functional control.

 


Keywords: Asthma, Pulmonary disease, chronic obstructive; Nebulizers and vaporizers.

 

Case Series

12 - An initial experience with a digital drainage system during the postoperative period of pediatric thoracic surgery

Experiência inicial com um sistema de drenagem digital no pós-operatório de cirurgia torácica pediátrica

Altair da Silva Costa Jr1,2,3, Thiago Bachichi1, Caio Holanda1, Luiz Augusto Lucas Martins De Rizzo4

J Bras Pneumol.2016;42(6):444-446

Abstract PDF PT PDF EN Portuguese Text

Objective: To report an initial experience with a digital drainage system during the postoperative period of pediatric thoracic surgery. Methods: This was a prospective observational study involving consecutive patients, ≤ 14 years of age, treated at a pediatric thoracic surgery outpatient clinic, for whom pulmonary resection (lobectomy or segmentectomy via muscle-sparing thoracotomy) was indicated. The parameters evaluated were air leak (as quantified with the digital system), biosafety, duration of drainage, length of hospital stay, and complications. The digital system was used in 11 children (mean age, 5.9 ± 3.3 years). The mean length of hospital stay was 4.9 ± 2.6 days, the mean duration of drainage was 2.5 ± 0.7 days, and the mean drainage volume was 270.4 ± 166.7 mL. The mean maximum air leak flow was 92.78 ± 95.83 mL/min (range, 18-338 mL/min). Two patients developed postoperative complications (atelectasis and pneumonia, respectively). The use of this digital system facilitated the decision-making process during the postoperative period, reducing the risk of errors in the interpretation and management of air leaks.

 


Keywords: Drainage; Thoracic surgery; Pediatrics.

 

13 - Hard metal lung disease: a case series

Doença pulmonar por metal duro: uma série de casos

Rafael Futoshi Mizutani1, Mário Terra-Filho1,2, Evelise Lima1, Carolina Salim Gonçalves Freitas1, Rodrigo Caruso Chate3, Ronaldo Adib Kairalla1,2, Regiani Carvalho-Oliveira4, Ubiratan Paula Santos1

J Bras Pneumol.2016;42(6):447-452

Abstract PDF PT PDF EN Portuguese Text

Objective: To describe diagnostic and treatment aspects of hard metal lung disease (HMLD) and to review the current literature on the topic. Methods: This was a retrospective study based on the medical records of patients treated at the Occupational Respiratory Diseases Clinic of the Instituto do Coração, in the city of São Paulo, Brazil, between 2010 and 2013. Results: Of 320 patients treated during the study period, 5 (1.56%) were diagnosed with HMLD. All of those 5 patients were male (mean age, 42.0 ± 13.6 years; mean duration of exposure to hard metals, 11.4 ± 8.0 years). Occupational histories were taken, after which the patients underwent clinical evaluation, chest HRCT, pulmonary function tests, bronchoscopy, BAL, and lung biopsy. Restrictive lung disease was found in all subjects. The most common chest HRCT finding was ground glass opacities (in 80%). In 4 patients, BALF revealed multinucleated giant cells. In 3 patients, lung biopsy revealed giant cell interstitial pneumonia. One patient was diagnosed with desquamative interstitial pneumonia associated with cellular bronchiolitis, and another was diagnosed with a hypersensitivity pneumonitis pattern. All patients were withdrawn from exposure and treated with corticosteroid. Clinical improvement occurred in 2 patients, whereas the disease progressed in 3. Conclusions: Although HMLD is a rare entity, it should always be included in the differential diagnosis of respiratory dysfunction in workers with a high occupational risk of exposure to hard metal particles. A relevant history (clinical and occupational) accompanied by chest HRCT and BAL findings suggestive of the disease might be sufficient for the diagnosis.

 


Keywords: Lung diseases, interstitial; Cobalt; Tungsten; Occupational exposure; Hard metal.

 

14 - Mouthpiece ventilation in Duchenne muscular dystrophy: a rescue strategy for noncompliant patients

Ventilação bucal na distrofia muscular de Duchenne: uma estratégia de resgate para pacientes não aderentes

Giuseppe Fiorentino1, Anna Annunziata1, Rosa Cauteruccio1, Gianfranco Scotto di Frega1, Antonio Esquinas2

J Bras Pneumol.2016;42(6):453-456

Abstract PDF PT PDF EN Portuguese Text

Objective: To evaluate mouthpiece ventilation (MPV) in patients with Duchenne muscular dystrophy (DMD) who are noncompliant with noninvasive ventilation (NIV). Methods: We evaluated four young patients with DMD who had previously refused to undergo NIV. Each patient was reassessed and encouraged to try MPV. Results: The four patients tolerated MPV well and were compliant with NIV at home. MPV proved to be preferable and more comfortable than NIV with any other type of interface. Two of the patients required overnight NIV and eventually agreed to use a nasal mask during the night. Conclusions: The advantages of MPV over other types of NIV include fewer speech problems, better appearance, and less impact on the patient, eliminating the risk of skin breakdown, gastric distension, conjunctivitis, and claustrophobia. The use of a mouthpiece interface should be always considered in patients with DMD who need to start NIV, in order to promote a positive approach and a rapid acceptance of NIV. Using MPV during the daytime makes patients feel safe and more likely to use NIV at night. In addition, MPV increases treatment compliance for those who refuse to use other types of interfaces.

 


Keywords: Muscular dystrophy, Duchenne; Noninvasive ventilation; Patient compliance.

 

Review Article

15 - The role of physical exercise in obstructive sleep apnea

O papel do exercício físico na apneia obstrutiva do sono

Flávio Maciel Dias de Andrade1,2, Rodrigo Pinto Pedrosa1,2

J Bras Pneumol.2016;42(6):457-464

Abstract PDF PT PDF EN Portuguese Text

Obstructive sleep apnea (OSA) is a common clinical condition, with a variable and underestimated prevalence. OSA is the main condition associated with secondary systemic arterial hypertension, as well as with atrial fibrillation, stroke, and coronary artery disease, greatly increasing cardiovascular morbidity and mortality. Treatment with continuous positive airway pressure is not tolerated by all OSA patients and is often not suitable in cases of mild OSA. Hence, alternative methods to treat OSA and its cardiovascular consequences are needed. In OSA patients, regular physical exercise has beneficial effects other than weight loss, although the mechanisms of those effects remain unclear. In this population, physiological adaptations due to physical exercise include increases in upper airway dilator muscle tone and in slow-wave sleep time; and decreases in fluid accumulation in the neck, systemic inflammatory response, and body weight. The major benefits of exercise programs for OSA patients include reducing the severity of the condition and daytime sleepiness, as well as increasing sleep efficiency and maximum oxygen consumption. There are few studies that evaluated the role of physical exercise alone for OSA treatment, and their protocols are quite diverse. However, aerobic exercise, alone or combined with resistance training, is a common point among the studies. In this review, the major studies and mechanisms involved in OSA treatment by means of physical exercise are presented. In addition to systemic clinical benefits provided by physical exercise, OSA patients involved in a regular, predominantly aerobic, exercise program have shown a reduction in disease severity and in daytime sleepiness, as well as an increase in sleep efficiency and in peak oxygen consumption, regardless of weight loss.

 


Keywords: Exercise therapy; Sleep apnea, obstructive; Cardiovascular diseases.

 

Letters to the Editor

17 - Pulmonary fat embolism of neoplastic origin

Embolia pulmonar gordurosa de origem neoplásica

Flávia Pinto1, Miriam Menna Barreto1, Daniela Braz Parente1, Edson Marchiori1

J Bras Pneumol.2016;42(6):466-467

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Relationship of Reviewers

 


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